Dell PowerEdge M420 Reference Manual page 1607

Default Configuration
This command has no default configuration.
Command Mode
Time Range Configuration
User Guidelines
time
Only one absolute time entry is allowed per time-range. The parameter
is referenced to the currently configured time zone.
Example
console#time-range timeRange_1
console(Config-time-range)#absolute end 12:00 16 Dec
2010
periodic
Use the periodic command to add a periodic time entry to a time range. The
time parameter is based off of the currently configured time zone. Use the no
form of this command to delete a periodic time entry from a time-range.
Syntax
time } to {[days-of-the-week] time }
periodic {days-of-the-week
no periodic
1603
Time Ranges Commands